TS/MP 2.5 System Management Manual

Each processor contains only one set of ACS core processes (Redirector (ROUT), PB, and
configuration subscriber (CS) programs running as $ZLnn, $ZPnn, and $ZCSnn processes
respectively, where nn is the processor number), which are responsible for all Pathsend requestors
executing in that processor. ACS subsystem core processes acquire links from the PATHMON
process that controls the server class. The ROUT process then shares the links among the Pathsend
requestors executing in the processor.
The ACS subsystem core processes are visible to a PATHMON process but are not controlled by
it. Unlike the TS/MP 2.0 LINKMON process, you can directly configure and control the ACS
subsystem using the Subsystem Control Facility (SCF) commands. You can use PATHCOM commands
to perform various ACS subsystem related functions. For more information on managing the ACS
subsystem and the ACS core processes, see the TS/MP Release Supplement.
Table 4 (page 110) lists the effects of various PATHCOM commands on the ACS subsystem.
Table 4 PATHCOM /PDMCOM Commands That Affect the ACS Subsystem
Effect on ACS ProcessesPATHCOM /PDMCOM Command
Prohibits the ACS subsystem from sending requests to server classesFREEZE SERVER
Displays the current MAXLINKMONS valueINFO PATHWAY
Resets the current values for a server class and server class securityRESET SERVER SECURITY
Alters the current values for a server class and server class securityALTER SERVER SECURITY
The MAXLINKMONS parameter sets the maximum number of ACS PB processes
that can communicate with a specific Pathway environment
SET PATHWAY
SECURITY parameters restrict access by Pathsend requestors to the server classesSET SERVER SECURITY
Checks the current SECURITY and OWNER attribute values for a server classSHOW SERVER
nl
INFO SERVER
Displays resource usage and performance statistics on ACS subsystem processes
linked to a specific server class
STATS SERVER
Checks the status of ACS PB processes that have links to server classes in the
Pathway environment
STATUS LINKMON
Identifies the ACS PB processes currently communicating with the PATHMON
process
STATUS PATHMON
Determines the number of ACS PB processes communicating with a Pathway
environment
STATUS PATHWAY
Identifies the ACS PB process linked to a specific server classSTATUS SERVER
s ACS subsystem processes to send requests to frozen server classesTHAW SERVER
For more information about the commands listed in Table 4 (page 110), see “PATHCOM Operation
Commands” (page 137), “PATHMON Environment Control Commands” (page 150) and “SERVER
Commands” (page 177).
If you have TS/MP 2.5 installed on your system, you need to configure and bring up the ACS
subsystem processes using SCF commands. You cannot start ACS subsystem processes with TACL
RUN commands.
Process Names
ACS subsystem processes appear in PATHCOM displays in the form L\system.$ZPnn, where nn
is the number of the processor on which the ACS subsystem processes reside. PATHCOM adds
an “L” before the system name to indicate that it is a link manager process, for example:
L\ABC.$ZP05
110 Managing the Pathsend Environment